20608720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2129}}^1$

素因数の和:2164

約数の個数: 60

約数和(自身を含む): 52691940

約数和(自身を除く): 32083220

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2129, 2420, 4258, 4840, 8516, 9680, 10645, 17032, 21290, 23419, 34064, 42580, 46838, 85160, 93676, 117095, 170320, 187352, 234190, 257609, 374704, 468380, 515218, 936760, 1030436, 1288045, 1873520, 2060872, 2576090, 4121744, 5152180, 10304360, 20608720]

約数ペア:

[(1, 20608720), (2, 10304360), (4, 5152180), (5, 4121744), (8, 2576090), (10, 2060872), (11, 1873520), (16, 1288045), (20, 1030436), (22, 936760), (40, 515218), (44, 468380), (55, 374704), (80, 257609), (88, 234190), (110, 187352), (121, 170320), (176, 117095), (220, 93676), (242, 85160), (440, 46838), (484, 42580), (605, 34064), (880, 23419), (968, 21290), (1210, 17032), (1936, 10645), (2129, 9680), (2420, 8516), (4258, 4840)]